Machine for forming seating-flanges on cans or tins.



No."73l,202. PATENTED JUNE 16, 1903.- W, MOIR & J. ROBERTSON. MAGHINE FOR FORMING SEATING PLANGES 0N CANS OR-TINS.

APPLICATION FILED APR. 10, 1902.

2 SHBETSSHBBT 1.

no MODEL.

I pf W M Um No. 731,202. PATENTED JUNE 16, 1903. W. MOIR & J. ROBERTSON. MACHINE FOR FORMING SEATING FLANGES ON OANS OR TINS.

APPLICATION FILED APR. 10, 1902.

2 SHEETS-SHEET 2.

N0 MODEL.

Fey. 2.

UNITED STATES iatented june 16, 1903.

FFIcE.

FATENT WVILLIAM MOIR AND JOHN ROBERTSON, OF ABERDEEN, SCOTLAND.

' SPECIFICATION forming part of Letters Patent No. 731 ,202, dated June 16, 1903. Application filed April 10, 1902. Serial No. 102,242. (No model.)

To aZZ whom it may concern:

Be it known that we, WVILLIAM MOIR, provision merchant, and JOHN ROBERTSON, tinplate worker, subjects of the King of the United Kingdom of Great Britain and Ireland,

and residents of No. 13 Exchange street, Aberdeen, in the county of Aberdeen, Scotland, have invented certain new and useful Improvements in Machines for Forming Seating- Flanges on Cans or Tins, of which the following is a specification.

Our invention relates to improved means for forming seating-flanges on the'seats or shoulders of cans or tins.

Our invention consists in novel features in the construction of such machines, as hereinafter described and claimed.

In order that our invention may be fully understood, we willproceed to describe it with reference to the accompanying drawings, in which V Figure 1 is a vertical longitudinal section of our improved machine for forming seatingfianges on cans or tins, the movable upper dieblock being shown in its raised position. Fig. 2 is a similar view, partly in elevation, the movable upper die-block being shown in its lowered position, the die-blocks having formed the seating-flange on the seat or shoulder of the can or tin. Fig. 3 is a plan view of the fixed lower die-block.

Referring to Figs. 1 and 2, H is an upper plate or base formed with orifices h, with a guide channel or recess h located over the orifices and with a central opening or recess 72 Located beneath this upper plate or base is a lower plate or subbase L, formed with an inner flange L and an outer flange L providing between them a channel Z, in which is placed a rubber ring or buffer L on which is yieldingly supported a ring K, slidable in the guide-channel h of the upper plate or base H. The ring K is normally upheld by means of rods 7c, screw-threaded into the ring K, passing freely through the orifices h and furnished at their lower ends with shoe-plates 70, resting on the rubber ring or bufier L 0 is a fixed lower die-block formed with a surrounding step c, with a vertical face 0 and with a central depending boss 0 extending through the central opening or recess 72/ of the upper plate or base and secured thereto by a nut c on the screw-threaded end of the boss 0 This fixed lower die-block C is surrounded by the slidable ring K. Located over the latteris the movable upper hollow dieblock D, having air-vents d and a central head or boss 61, having a central opening d Within this upper die-block islocated a holder or casing D, having air-vents d This holder or casing has a central stem j extending through the central opening d of the head or boss d and is supported thereon by a nutj. The upper die-block D is yieldingly supported on the holder or casing D'by a coilspring J, surrounding the stemj within the head or boss 61 and extending between the top of the latter and the holder or casing D. The object of this machine is to form a seatingfiange a, as shown in Fig. 2, on the seat or shoulder a of a can ortin A, which is placed in an inverted or upside-down position within the holder or casing D, as shown in Fig. 1, and over the lower die-block C, with its face 0' located therein and its seat or shoulder located above the step c of the lower die-block and between the ring K and the upper dieblock.

The upper dieblock D, which is carried on the holder or casing, is forced downward for the purpose of turning down the edge of the seat or shoulder a to form a seating-flange a as shown in Fig. 2. The seat or shoulder a is firmly held by the holderor casing D down upon the step c of the lower die-block O. The vcoilspring J is compressed, while the stem j is permitted to project through the head or boss d. The upper die-block D moves downward and presses on and folds the edge of the seat or shoulder a against the lower fixed dieblock and forms the seating-flange a. At the same time the ring K is depressed on its rubber ring or buffer L bythe upper die-block D, which presses thereon. When the upper die-block D recedes the, ring K is free to return to its normal position under-the expanding pressure of the rubber ring or buffer L and in so doing it smooths the outer side of the seating-flange a by frictional contact therewith, the ripg K being of smaller size than the Wall or ring of the upper die-block. This forced action of the ringK also displaces the can or tin off the lower die-block O, operating as follows: As the upper die-block D is ICO lifted off the lower die-block O the ring K under the expansion of the rubber ring or buffer L follows it, the holder and easing D still remaining for a short period in contact with the seat or shoulder of the can or tin until the tension is taken from the coil-spring J by the further receding movement of the upper die-block D, when the holder or casing D follows.the upper die-block, leaving the can or tin on the lower die-block C. When the'pressure of the edge of the holder or casing D is removed from the seat or shoulder of the can or tin, the ringKin completing its return to its normal position pushes the can or tin off the lower (lie-block G--that is to say, just before the ringK has completed its return stroke in frictional contact with the can or tin the holder or casing D is raised from OH the flange, thus permitting the frictional contact of the ring K to push the can or tin olf the lower die-block 0.

Having thus described our invention, the following is what we claim as new therein and desire to secure by Letters Patentz' 1. The combination of a base, a lower dieblock having a step, a holder seating on the step, and an upper die-block carrying the holder and adapted to work past the holder around the step of the fixed die-block.

2. The combination of a base, a lower dieblock having a step, a holder seating on the step, and having a stem, an upper die-block carrying the holder by its stem, and a coilspring surrounding the stem between the holder and the upper die-block.

3. The combination of a base, a lower dieblock having a step, a holder seating on the step, an upper die-block carrying the holder, and a yielding ring surrounding the lower die-block in the path of the upper die-block.

4. The combination of a base, a lower dieblock having a step, a holder seating on the step, an upper die-block carrying the holder, a subbase, having flanges, providing a channel between them, a buffer located in the channel, a ring surrounding the lower dieblock, and rods having shoe-plates whereby the ring is supported on the buffer.

5. The combination of a base having orifices and a channel located above the orifices,

, a subbase having flanges providing a channel between them, a bufier located in the channel of the subbase, a ring slidable in the channel of the base, rods and shoe-plates supporting the ring upon the buffer, a lower dieblock having a step and located on the base within the ring, a holder seating on the step, an-upper die-block carrying the holder, and working over the ring.

WILLIAM MOIR. JOHN ROBERTSON.

Witnesses: I

R. M. WILLIAMSON, JOHN Scor'r. e 

